It's a young leaf. Sometimes it takes a while for new leaves to split like the older ones. It's not a deformity.

Jen

I assume you are talking about the slight variegation on the leaf....there are variegated forms of this plant, so it is not unusual for them to have this trait....

The more mature your plant, the more split leaves will be produced. YOur plant is young, so be patient.:) I've had mine for 3 years now and it has sporadically produced split leaves. Most of them have been without splits. Imagine my excitement when I got a huge, perfectly split leaf this summer! I've been waiting for 3 years for this plant to give me a leaf with 3 perforations on each side. I'm hoping for more next summer.

Just continue to give your plant bright indirect light and be patient.

No, I didn't explain myself clearly (not enough sleep here lately) It is the slight varigation on the leaf as Webkat noticed:) I think it is so cool looking, but I was trying to figure out how it did that, if it had to have certain growing conditions or something. The pictures are not that great either, I am a awful picture taker.

I think it looks really cool too. Plants will spontaneously come up with variegated shoots sometimes. More often, a variegated plant will try to revert to all green. I don't think you can do anything to encourage more, except maybe upping the light a bit.

Micke,
In all of the reading I have done to try to figure out how to stake my Monstera, I read that the plant will produce smaller un-split leaves if it doesn't have a chance to climb. I finally found a nice large moss stick online. I can give you the info if you email me..
I will let you know if mine ever takes to it!
Lori

Yes I have heard that myself, even goes for pothos, ever noticed how the ones just allowed to hang in hanging baskets have smaller leaves compared to the ones that climb upwards on a stake? I heard the reason this is so is the fact that in their natural habitat they climb upwards:)
I know I need to do something about staking it up, I cannot purchase anything online however:( I will have to make some phonecalls around town, see if I can find someone that has something like that moss stick that I can use.
thanks:)
micke

I saw some good size monsteras today but I moved on as most had leaves with white splashes on and I'm not a fan of such variegation.(plus i had no money!) I would imagine it might disappear if kept in deep shade tho.

I like the ones with LOTS of streaks on them, I have only seen this in the Varigated Monstera and they have been so expensive! That is why I got so excited over this leaf:)

It doesn't necessarily have to be a moss pole - or expensive. :-)

I have mine climbing an old bit of split rail cedar fence post I got on the side of the road. It's coming due to get a taller post. Each leaf adds about ten inches to the height of the plant when you start getting the big leaves (currently the biggest leaf on mine is platter size, and the plant itself is about 3-4 feet tall)

I direct the aerial roots down into the pot.

I wouldn't invest much in the pole, since it's just going to outgrow it within about a year or two anyways if the pole is less than three feet tall.

The stalks when it starts climbing are awesome. Right now, they are thicker than my thumb, and the leaf stems have become angular and reedy rather than the almost 'succulent' stems that it started out with.